The patch is generated from following command:
rgrep -l unused.h|xargs sed -i -e s,mozilla/unused.h,mozilla/Unused.h,
MozReview-Commit-ID: AtLcWApZfES
--HG--
rename : mfbt/unused.h => mfbt/Unused.h
Refactor the dispatching code to be more streamlined, and add two
optimizations to the way we dispatch a call:
* avoid a pair of unnecessary calls to add/delete the global class ref,
when dispatching a static call to the Gecko thread without a class ref
parameter.
* avoid an extra allocation when dispatching to a proxy function.
Implement checking the calling thread of a JNI call based on the
calledFrom attribute set in WrapForJNI. Also implement automatic call
dispatching based on the dispatchTo attribute set in WrapForJNI. This
eliminates the use of UsesNativeCallProxy and UsesGeckoThreadProxy.
clang complains that it's unable to instantiate this template because
the functions being passed as arguments are MOZ_JNICALL, while the
actual parameter to the function has no such attribute. Adding the
attribute makes everything line up.
clang complains about specializations of NativeStubImpl not being able
to see the private constructor of ProxyNativeCall. While
ProxyNativeCall includes a friend declaration for NativeStubImpl, it's
not obvious *which* NativeStubImpl is being friended, as NativeStubImpl
hasn't been forward declared and exists in a completely separate
namespace. Forward declaring NativeStubImpl and adjusting the friend
declaration makes everything more correct.
WindowEvent is not specific to GeckoViewSupport, and classes other than
GeckoViewSupport use it, so this patch moves it to outside of
GeckoViewSupport.
Improve the performance of JNI calls by making JNI calls require a
Context object. LocalRef inherits from Context and can make calls
directly. Non-local Ref classes will generate a Context object when
making a call. The patch also makes the template design cleaner in
several cases.
When we have a Java exception in native code, the Java stack in the
exception will not be very useful because the top frame is the native
entry point. In this case, the native stack is more useful. However,
currently we don't get a good native stack in this situation because we
go through Java when handling the exception, and the native stack we get
will have a lot of unknown frames inside libdvm or libart. This patch
makes us stay in native code when handling an uncaught exception from
native code, so that we get a good native stack.
GeckoEvent.KEY_EVENT and GeckoEvent.IME_EVENT used to count as UI events
for the hang monitor. We should count the new native calls as native
events too through this patch.
It's helpful to have a static DisposeNative when disposing of instances
that are still associated with a native object through an null weak
pointer. In that case, we can't call instance methods because the weak
pointer is null, but we can still call static methods.
If a C++ class implements native calls that all return void, it can
choose to have those calls go through a custom proxy function by
inheriting from mozilla::jni::UsesNativeCallProxy and override the
ProxyNativeCall member.
ProxyNativeCall accepts a rvalue reference to a
functor object specific to each call, and can alter the calling
environment (e.g. dispatch the call to another thread) before issuing
the actual native call through the functor's operator().
Any JNI refs contained in the call are automatically turned into global
refs so that the call can continue to work outside of the original JNI
call.
Native call proxy will be used to implement automatic dispatching of
native calls from the main thread to run on the Gecko thread.
This patch fixes a compile error when using WeakPtr, where Impl* was
expected but SupportsWeakPtr<Impl>* was given.
This patch also fixes a compile error when using the DisposeNative
implementation provided by the autogenerated Natives class. e.g.,
> struct Foo : Bar::Natives<Foo> {
> using Bar::Natives<Foo>::DisposeNative;
> };
This uses a default implementation of DisposeNative instead of a custom
implementation, and resulted in a compile error that this patch fixes.
The mangled name of a NativeStubImpl instantiation is longer than
necessary because of the ReturnType arg. This patch turns it into a bool
parameter. It also reorders the parameters for cleanness.
Add a direct ownership model where the Java object owns the
corresponding C++ object directly, in addition to the WeakPtr model
where the Java object owns a WeakPtr to the C++ object. The WeakPtr
model is chosen when the implementing C++ class inherits from
SupportsWeakPtr. Otherwise, the direct ownership model is chosen. Under
the direct ownership model, a UniquePtr object must be used to attach
the containing C++ object to a Java object, to ensure ownership is
passed on to the Java object.
Introduce a JNIObject class that serves as a base class for classes
that wish to use per-instance native methods. JNIObject includes a long
native pointer field that the C++ code accesses to associate the Java
object instance with a C++ object instance.
